[gcc r15-1603] aarch64: Add DLL import/export to AArch64 target
Christophe Lyon
clyon@gcc.gnu.org
Tue Jun 25 06:40:00 GMT 2024
https://gcc.gnu.org/g:30db57901ccac7027f93ff71e70a66e26a4f70f5
commit r15-1603-g30db57901ccac7027f93ff71e70a66e26a4f70f5
Author: Evgeny Karpov <Evgeny.Karpov@microsoft.com>
Date: Sat Jun 8 13:49:17 2024 +0000
aarch64: Add DLL import/export to AArch64 target
This patch reuses the MinGW implementation to enable DLL import/export
functionality for the aarch64-w64-mingw32 target. It also modifies
environment configurations for MinGW.
2024-06-08 Evgeny Karpov <Evgeny.Karpov@microsoft.com>
gcc/ChangeLog:
* config.gcc: Add winnt-dll.o, which contains the DLL
import/export implementation.
* config/aarch64/aarch64.cc (aarch64_load_symref_appropriately):
Add dllimport implementation.
(aarch64_expand_call): Likewise.
(aarch64_legitimize_address): Likewise.
* config/aarch64/cygming.h (SYMBOL_FLAG_DLLIMPORT): Modify MinGW
environment to support DLL import/export.
(SYMBOL_FLAG_DLLEXPORT): Likewise.
(SYMBOL_REF_DLLIMPORT_P): Likewise.
(SYMBOL_FLAG_STUBVAR): Likewise.
(SYMBOL_REF_STUBVAR_P): Likewise.
(TARGET_VALID_DLLIMPORT_ATTRIBUTE_P): Likewise.
(TARGET_ASM_FILE_END): Likewise.
(SUB_TARGET_RECORD_STUB): Likewise.
(GOT_ALIAS_SET): Likewise.
(PE_COFF_EXTERN_DECL_SHOULD_BE_LEGITIMIZED): Likewise.
(HAVE_64BIT_POINTERS): Likewise.
Diff:
---
gcc/config.gcc | 4 +++-
gcc/config/aarch64/aarch64.cc | 26 ++++++++++++++++++++++++++
gcc/config/aarch64/cygming.h | 26 ++++++++++++++++++++++++--
3 files changed, 53 insertions(+), 3 deletions(-)
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 70757c95436..bc45615741b 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1276,10 +1276,12 @@ aarch64-*-mingw*)
tm_file="${tm_file} mingw/mingw32.h"
tm_file="${tm_file} mingw/mingw-stdint.h"
tm_file="${tm_file} mingw/winnt.h"
+ tm_file="${tm_file} mingw/winnt-dll.h"
tmake_file="${tmake_file} aarch64/t-aarch64"
target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt.cc"
+ target_gtfiles="$target_gtfiles \$(srcdir)/config/mingw/winnt-dll.cc"
extra_options="${extra_options} mingw/cygming.opt mingw/mingw.opt"
- extra_objs="${extra_objs} winnt.o"
+ extra_objs="${extra_objs} winnt.o winnt-dll.o"
c_target_objs="${c_target_objs} msformat-c.o"
d_target_objs="${d_target_objs} winnt-d.o"
tmake_file="${tmake_file} mingw/t-cygming"
diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index 61daa6daf68..6b106a72e49 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -860,6 +860,10 @@ static const attribute_spec aarch64_gnu_attributes[] =
{ "Advanced SIMD type", 1, 1, false, true, false, true, NULL, NULL },
{ "SVE type", 3, 3, false, true, false, true, NULL, NULL },
{ "SVE sizeless type", 0, 0, false, true, false, true, NULL, NULL },
+#if TARGET_DLLIMPORT_DECL_ATTRIBUTES
+ { "dllimport", 0, 0, false, false, false, false, handle_dll_attribute, NULL },
+ { "dllexport", 0, 0, false, false, false, false, handle_dll_attribute, NULL },
+#endif
#ifdef SUBTARGET_ATTRIBUTE_TABLE
SUBTARGET_ATTRIBUTE_TABLE
#endif
@@ -2865,6 +2869,15 @@ static void
aarch64_load_symref_appropriately (rtx dest, rtx imm,
enum aarch64_symbol_type type)
{
+#if TARGET_PECOFF
+ rtx tmp = legitimize_pe_coff_symbol (imm, true);
+ if (tmp)
+ {
+ emit_insn (gen_rtx_SET (dest, tmp));
+ return;
+ }
+#endif
+
switch (type)
{
case SYMBOL_SMALL_ABSOLUTE:
@@ -11233,6 +11246,13 @@ aarch64_expand_call (rtx result, rtx mem, rtx cookie, bool sibcall)
gcc_assert (MEM_P (mem));
callee = XEXP (mem, 0);
+
+#if TARGET_PECOFF
+ tmp = legitimize_pe_coff_symbol (callee, false);
+ if (tmp)
+ callee = tmp;
+#endif
+
mode = GET_MODE (callee);
gcc_assert (mode == Pmode);
@@ -12709,6 +12729,12 @@ aarch64_anchor_offset (HOST_WIDE_INT offset, HOST_WIDE_INT size,
static rtx
aarch64_legitimize_address (rtx x, rtx /* orig_x */, machine_mode mode)
{
+#if TARGET_PECOFF
+ rtx tmp = legitimize_pe_coff_symbol (x, true);
+ if (tmp)
+ return tmp;
+#endif
+
/* Try to split X+CONST into Y=X+(CONST & ~mask), Y+(CONST&mask),
where mask is selected by alignment and size of the offset.
We try to pick as large a range for the offset as possible to
diff --git a/gcc/config/aarch64/cygming.h b/gcc/config/aarch64/cygming.h
index 76623153080..e26488735db 100644
--- a/gcc/config/aarch64/cygming.h
+++ b/gcc/config/aarch64/cygming.h
@@ -28,12 +28,18 @@ along with GCC; see the file COPYING3. If not see
#define print_reg(rtx, code, file) (gcc_unreachable ())
-#define SYMBOL_FLAG_DLLIMPORT 0
-#define SYMBOL_FLAG_DLLEXPORT 0
+#define SYMBOL_FLAG_DLLIMPORT (SYMBOL_FLAG_MACH_DEP << 0)
+#define SYMBOL_REF_DLLIMPORT_P(X) \
+ ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_DLLIMPORT) != 0)
+#define SYMBOL_FLAG_DLLEXPORT (SYMBOL_FLAG_MACH_DEP << 1)
#define SYMBOL_REF_DLLEXPORT_P(X) \
((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_DLLEXPORT) != 0)
+#define SYMBOL_FLAG_STUBVAR (SYMBOL_FLAG_MACH_DEP << 2)
+#define SYMBOL_REF_STUBVAR_P(X) \
+ ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_STUBVAR) != 0)
+
/* Disable SEH and declare the required SEH-related macros that are
still needed for compilation. */
#undef TARGET_SEH
@@ -59,6 +65,12 @@ still needed for compilation. */
#define TARGET_ASM_UNIQUE_SECTION mingw_pe_unique_section
#define TARGET_ENCODE_SECTION_INFO mingw_pe_encode_section_info
+#define TARGET_VALID_DLLIMPORT_ATTRIBUTE_P mingw_pe_valid_dllimport_attribute_p
+
+/* Output function declarations at the end of the file. */
+#undef TARGET_ASM_FILE_END
+#define TARGET_ASM_FILE_END mingw_pe_file_end
+
/* Declare the type properly for any external libcall. */
#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
mingw_pe_declare_function_type (FILE, XSTR (FUN, 0), 1)
@@ -158,6 +170,9 @@ still needed for compilation. */
{ "selectany", 0, 0, true, false, false, false, \
mingw_handle_selectany_attribute, NULL }
+#undef SUB_TARGET_RECORD_STUB
+#define SUB_TARGET_RECORD_STUB mingw_pe_record_stub
+
#define SUPPORTS_ONE_ONLY 1
/* Define this to be nonzero if static stack checking is supported. */
@@ -168,4 +183,11 @@ still needed for compilation. */
#undef MAX_OFILE_ALIGNMENT
#define MAX_OFILE_ALIGNMENT (8192 * 8)
+#undef GOT_ALIAS_SET
+#define GOT_ALIAS_SET mingw_GOT_alias_set ()
+
+#define PE_COFF_EXTERN_DECL_SHOULD_BE_LEGITIMIZED 1
+
+#define HAVE_64BIT_POINTERS 1
+
#endif
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